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/* $Id: drv_PHAnderson.c 840 2008-11-19 23:56:42 guimli $
* $URL: https://ssl.bulix.org/svn/lcd4linux/trunk/drv_PHAnderson.c $
*
* driver for the PHAnderson serial-to-HD44780 adapter boards
* http://www.phanderson.com/lcd106/lcd107.html
* http://moderndevice.com/Docs/LCD117CommandSummary.doc
* http://wulfden.org/TheShoppe/k107/index.shtml
*
* Copyright (C) 2008 Nicolas Weill <guimli@free.fr>
* Copyright (C) 2005 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
*
* This file is part of LCD4Linux.
*
* LCD4Linux is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* LCD4Linux is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
/*
*
* exported fuctions:
*
* struct DRIVER drv_PHAnderson
*
*/
#include "config.h"
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include "debug.h"
#include "cfg.h"
#include "qprintf.h"
#include "udelay.h"
#include "plugin.h"
#include "widget.h"
#include "widget_text.h"
#include "widget_icon.h"
#include "widget_bar.h"
#include "drv.h"
#include "drv_generic_text.h"
#include "drv_generic_serial.h"
#define PHAnderson_CMD '?'
static char Name[] = "PHAnderson";
static int T_READ, T_WRITE, T_BOOT;
/****************************************/
/*** hardware dependant functions ***/
/****************************************/
static int drv_PHAnderson_open(const char *section)
{
if (drv_generic_serial_open(section, Name, 0) < 0)
return -1;
return 0;
}
static int drv_PHAnderson_close(void)
{
drv_generic_serial_close();
return 0;
}
static void drv_PHAnderson_send(const char *data, const unsigned int len)
{
char buffer[255];
unsigned int i, j;
j = 0;
for (i = 0; i < len; i++) {
if (data[i] < 8) {
buffer[j++] = '?';
buffer[j++] = '0' + data[i];
drv_generic_serial_write(buffer, j);
udelay(T_READ);
j = 0;
} else {
buffer[j++] = data[i];
}
}
if (j > 0) {
drv_generic_serial_write(buffer, j);
}
}
static void drv_PHAnderson_clear(void)
{
char cmd[2];
cmd[0] = '?';
cmd[1] = 'f';
drv_PHAnderson_send(cmd, 2);
}
static void drv_PHAnderson_write(const int row, const int col, const char *data, int len)
{
char cmd[7];
cmd[0] = '?';
cmd[1] = 'y';
cmd[2] = row + '0';
cmd[3] = '?';
cmd[4] = 'x';
cmd[5] = col / 10 + '0';
cmd[6] = col % 10 + '0';
drv_PHAnderson_send(cmd, 7);
drv_PHAnderson_send(data, len);
}
static void drv_PHAnderson_defchar(const int ascii, const unsigned char *matrix)
{
char cmd[19];
int i;
cmd[0] = '?';
cmd[1] = 'D';
cmd[2] = ascii + '0';
for (i = 0; i < 8; i++) {
cmd[i * 2 + 3] = ((matrix[i] >> 4) & 1) + '0';
cmd[i * 2 + 4] = (((matrix[i] & 0x0F) < 10) ? (matrix[i] & 0x0F) + '0' : (matrix[i] & 0x0F) + '7');
}
drv_PHAnderson_send(cmd, 19);
udelay(T_WRITE);
}
static int drv_PHAnderson_blacklight(int blacklight)
{
char cmd[4];
if (blacklight < 0)
blacklight = 0;
if (blacklight > 255)
blacklight = 255;
cmd[0] = '?';
cmd[1] = 'B';
cmd[2] = (((blacklight >> 4) < 10) ? (blacklight >> 4) + '0' : (blacklight >> 4) + '7');
cmd[3] = (((blacklight & 0x0F) < 10) ? (blacklight & 0x0F) + '0' : (blacklight & 0x0F) + '7');
drv_PHAnderson_send(cmd, 4);
udelay(T_WRITE);
return blacklight;
}
static int drv_PHAnderson_bootscreen(const char *bootmsg)
{
char cmd[255];
int i, j, k;
i = 0;
j = 0;
k = 0;
if (bootmsg == NULL || *bootmsg == '\0') {
cmd[0] = '?';
cmd[1] = 'S';
cmd[2] = '0';
drv_PHAnderson_send(cmd, 3);
udelay(T_WRITE);
} else {
cmd[0] = '?';
cmd[1] = 'S';
cmd[2] = '2';
drv_PHAnderson_send(cmd, 3);
udelay(T_WRITE);
cmd[0] = '?';
cmd[1] = 'C';
for (i = 0; i < DROWS; i++) {
cmd[2] = '0' + i;
for (k = 0; k < DCOLS; k++) {
if (bootmsg[j] != '\0') {
cmd[3 + k] = bootmsg[j];
j++;
} else {
cmd[3 + k] = ' ';
}
}
drv_PHAnderson_send(cmd, k + 3);
udelay(T_BOOT);
}
}
return j;
}
static int drv_PHAnderson_start(const char *section)
{
int blacklight;
int rows = -1, cols = -1;
char *s;
char cmd[255];
s = cfg_get(section, "Size", NULL);
if (s == NULL || *s == '\0') {
error("%s: no '%s.Size' entry from %s", Name, section, cfg_source());
return -1;
}
if (sscanf(s, "%dx%d", &cols, &rows) != 2 || rows < 1 || cols < 1) {
error("%s: bad %s.Size '%s' from %s", Name, section, s, cfg_source());
free(s);
return -1;
}
DROWS = rows;
DCOLS = cols;
/* PHAnderson execution timings [milliseconds]
* we use the worst-case default values, but allow
* modification from the config file.
*/
T_WRITE = timing(Name, section, "WRITE", 170, "ms") * 1000; /* write eeprom time */
T_READ = timing(Name, section, "READ", 10, "ms") * 1000; /* read eeprom time */
T_BOOT = timing(Name, section, "BOOT", 300, "ms") * 1000; /* boot screen write eeprom time */
if (drv_PHAnderson_open(section) < 0) {
return -1;
}
/* Define screen size */
cmd[0] = '?';
cmd[1] = 'G';
cmd[2] = rows + '0';
cmd[3] = (cols / 10) + '0';
cmd[4] = (cols % 10) + '0';
drv_PHAnderson_send(cmd, 5);
udelay(T_WRITE);
/* Hide cursor */
cmd[0] = '?';
cmd[1] = 'c';
cmd[2] = '0';
drv_PHAnderson_send(cmd, 3);
udelay(T_WRITE);
if (cfg_number(section, "Blacklight", 0, 0, 255, &blacklight) > 0) {
drv_PHAnderson_blacklight(blacklight);
}
s = cfg_get(section, "Bootscreen", NULL);
printf(s);
drv_PHAnderson_bootscreen(s);
drv_PHAnderson_clear(); /* clear display */
return 0;
}
/****************************************/
/*** plugins ***/
/****************************************/
static void plugin_blacklight(RESULT * result, RESULT * arg1)
{
double blacklight;
blacklight = drv_PHAnderson_blacklight(R2N(arg1));
SetResult(&result, R_NUMBER, &blacklight);
}
static void plugin_bootscreen(RESULT * result, RESULT * arg1)
{
double bootmsg;
bootmsg = drv_PHAnderson_bootscreen(R2S(arg1));
SetResult(&result, R_NUMBER, &bootmsg);
}
/****************************************/
/*** widget callbacks ***/
/****************************************/
/* using drv_generic_text_draw(W) */
/* using drv_generic_text_icon_draw(W) */
/* using drv_generic_text_bar_draw(W) */
/****************************************/
/*** exported functions ***/
/****************************************/
/* list models */
int drv_PHAnderson_list(void)
{
printf("PHAnderson serial-to-HD44780 adapter");
return 0;
}
int drv_PHAnderson_init(const char *section, const int quiet)
{
WIDGET_CLASS wc;
int ret;
info("%s: %s", Name, "$Rev: 840 $");
/* display preferences */
XRES = 5; /* pixel width of one char */
YRES = 8; /* pixel height of one char */
CHARS = 8; /* number of user-defineable characters */
CHAR0 = 0; /* ASCII of first user-defineable char */
GOTO_COST = 7; /* number of bytes a goto command requires */
/* real worker functions */
drv_generic_text_real_write = drv_PHAnderson_write;
drv_generic_text_real_defchar = drv_PHAnderson_defchar;
/* start display */
if ((ret = drv_PHAnderson_start(section)) != 0)
return ret;
if (!quiet) {
char buffer[40];
qprintf(buffer, sizeof(buffer), "%s %dx%d", Name, DCOLS, DROWS);
if (drv_generic_text_greet(buffer, "www.bwct.de")) {
sleep(3);
drv_PHAnderson_clear();
}
}
/* initialize generic text driver */
if ((ret = drv_generic_text_init(section, Name)) != 0)
return ret;
/* initialize generic icon driver */
if ((ret = drv_generic_text_icon_init()) != 0)
return ret;
/* initialize generic bar driver */
if ((ret = drv_generic_text_bar_init(0)) != 0)
return ret;
/* add fixed chars to the bar driver */
drv_generic_text_bar_add_segment(0, 0, 0, 32); /* ASCII 32 = blank */
/* register text widget */
wc = Widget_Text;
wc.draw = drv_generic_text_draw;
widget_register(&wc);
/* register icon widget */
wc = Widget_Icon;
wc.draw = drv_generic_text_icon_draw;
widget_register(&wc);
/* register bar widget */
wc = Widget_Bar;
wc.draw = drv_generic_text_bar_draw;
widget_register(&wc);
/* register plugins */
AddFunction("LCD::blacklight", 1, plugin_blacklight);
AddFunction("LCD::bootscreen", 1, plugin_bootscreen);
return 0;
}
int drv_PHAnderson_quit(const int quiet)
{
info("%s: shutting down.", Name);
drv_generic_text_quit();
drv_PHAnderson_clear();
/* say goodbye... */
if (!quiet) {
drv_generic_text_greet("goodbye!", NULL);
}
debug("closing connection");
drv_PHAnderson_close();
return (0);
}
DRIVER drv_PHAnderson = {
.name = Name,
.list = drv_PHAnderson_list,
.init = drv_PHAnderson_init,
.quit = drv_PHAnderson_quit,
};
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